NUR 2101 Sleep Exam | Questions and Answers |
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Terms in this set (57)
Physiology of Sleep Circadian rhythms
*Affected by light, temperature, social activities,
and work routines
Failure to maintain an individual's usual sleep-wake
cycle negatively influences his or her overall
health.
Sleep-wake cycle influences and regulates body functions and
behavioral responses.
Circadian rhythm is... everyone's day-night, 24-hour clock. This is why we
need to pay attention to the patient's work, school,
and life patterns and be aware of how they are
affected when hospitalized.
Every person has a biological clock normally synchronized by exposure to light and
that is ... activity. This explains why some people fall asleep
at 8 pm, whereas others go to bed at midnight or
early in the morning. Different people also function
best at different times of the day. Factors such as
social activities, and work routines affect circadian
rhythms and daily sleep-wake cycles.
,Hospitals and extended care do not usually adapt care to an individual's sleep-
facilities ... wake cycle preferences
When the sleep-wake cycle other physiological functions change as well.
becomes disrupted...
Common symptoms of sleep cycle disturbances:
*Decreased appetite
*Weight loss
*Anxiety
*Restlessness
*Irritability
*Impaired judgment
Circadian Rhythm Circadian synchronization = biological coincides
with sleep -wake cycle
Circadian synchronization = the person is awake
when the body temperature is highest and asleep
when the body temperature is the lowest
1) Circadian synchronization = biological coincides with sleep -wake cycle
2) Circadian synchronization = the person is awake when the body temperature is
highest and asleep when the body temperature is
the lowest
Stages of Sleep *Two Phases
*Four Stages
*REM Sleep
, Normal sleep involves two phases: Nonrapid eye movement (NREM) sleep and rapid
eye movement (REM) sleep.
During NREM sleep an individual progresses
through four stages during a typical 90-minute
sleep cycle.
NREM stages 1-2: lighter sleep The quality of sleep from stage 1 through stage 4
becomes increasingly deep.
NREM stages 3-4: slow-wave sleep
Lighter sleep is characteristic of stages 1 and 2,
when a person is more easily arousable.
Stages 3 and 4 involve a deeper sleep called slow-
wave sleep from which a person is more difficult to
arouse.
REM Sleep is the phase at the end of each 90-minute sleep
cycle.
There is increased brain activity associated with
rapid eye movements and muscle atonia.
Stage 1 NREM Very light sleep
Only a few minutes long
Awakens easily
Feels relaxed & drowsy
Stage 2 NREM Deeper sleep
10-20 min long
Requires more stimulation to waken
Increased relaxation
Verified Solutions | 2026 Edition | Pass
Guaranteed
Save
Terms in this set (57)
Physiology of Sleep Circadian rhythms
*Affected by light, temperature, social activities,
and work routines
Failure to maintain an individual's usual sleep-wake
cycle negatively influences his or her overall
health.
Sleep-wake cycle influences and regulates body functions and
behavioral responses.
Circadian rhythm is... everyone's day-night, 24-hour clock. This is why we
need to pay attention to the patient's work, school,
and life patterns and be aware of how they are
affected when hospitalized.
Every person has a biological clock normally synchronized by exposure to light and
that is ... activity. This explains why some people fall asleep
at 8 pm, whereas others go to bed at midnight or
early in the morning. Different people also function
best at different times of the day. Factors such as
social activities, and work routines affect circadian
rhythms and daily sleep-wake cycles.
,Hospitals and extended care do not usually adapt care to an individual's sleep-
facilities ... wake cycle preferences
When the sleep-wake cycle other physiological functions change as well.
becomes disrupted...
Common symptoms of sleep cycle disturbances:
*Decreased appetite
*Weight loss
*Anxiety
*Restlessness
*Irritability
*Impaired judgment
Circadian Rhythm Circadian synchronization = biological coincides
with sleep -wake cycle
Circadian synchronization = the person is awake
when the body temperature is highest and asleep
when the body temperature is the lowest
1) Circadian synchronization = biological coincides with sleep -wake cycle
2) Circadian synchronization = the person is awake when the body temperature is
highest and asleep when the body temperature is
the lowest
Stages of Sleep *Two Phases
*Four Stages
*REM Sleep
, Normal sleep involves two phases: Nonrapid eye movement (NREM) sleep and rapid
eye movement (REM) sleep.
During NREM sleep an individual progresses
through four stages during a typical 90-minute
sleep cycle.
NREM stages 1-2: lighter sleep The quality of sleep from stage 1 through stage 4
becomes increasingly deep.
NREM stages 3-4: slow-wave sleep
Lighter sleep is characteristic of stages 1 and 2,
when a person is more easily arousable.
Stages 3 and 4 involve a deeper sleep called slow-
wave sleep from which a person is more difficult to
arouse.
REM Sleep is the phase at the end of each 90-minute sleep
cycle.
There is increased brain activity associated with
rapid eye movements and muscle atonia.
Stage 1 NREM Very light sleep
Only a few minutes long
Awakens easily
Feels relaxed & drowsy
Stage 2 NREM Deeper sleep
10-20 min long
Requires more stimulation to waken
Increased relaxation
